try save password without displaying

.github/workflows/SQL2019.yaml

@@ -37,7 +37,7 @@ jobs:
         run: |
           setlocal enabledelayedexpansion
           set password=%random%%random%%random%qaZ~@
-          echo dbPassword=%password% >> "%GITHUB_ENV%" >nul 2>&1
+          for /f "delims=" %%i in ('echo !password!') do echo dbPassword=%%i >> "%GITHUB_ENV%"
 
       # Downloads the R cabinet file for the initial release version of SQL Server 2019.
       # Note that we use the -L flag to allow for redirects.